🛡️ CVE-2022-20824
🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-121 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation of specific values that are within a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or cause the Cisco Discovery Protocol process to crash and restart multiple times, which would cause the affected device to reload, resulting in a DoS condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-121
Public Exploit ✅ No
Source NVD
Published 2022-08-25
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
mds-9506-firmware
mds-9513-firmware
mds-9706-firmware
mds-9710-firmware
mds-9718-firmware
nexus-1000v-firmware
nexus-3016-firmware
nexus-3016q-firmware
nexus-3048-firmware
nexus-3064-32t-firmware
nexus-3064-firmware
nexus-3064-t-firmware
nexus-3064-x-firmware
nexus-3064t-firmware
nexus-3064x-firmware
nexus-3100-firmware
nexus-3100-v-firmware
nexus-3100-z-firmware
nexus-3100v-firmware
nexus-31108pc-v-firmware
nexus-31108pv-v-firmware
nexus-31108tc-v-firmware
nexus-31128pq-firmware
nexus-3132c-z-firmware
nexus-3132q-firmware
nexus-3132q-v-firmware
nexus-3132q-x-firmware
nexus-3132q-x\/3132q-xl-firmware
nexus-3132q-xl-firmware
nexus-3164q-firmware
nexus-3172-firmware
nexus-3172pq-firmware
nexus-3172pq-xl-firmware
nexus-3172pq\/pq-xl-firmware
nexus-3172tq-32t-firmware
nexus-3172tq-firmware
nexus-3172tq-xl-firmware
nexus-3200-firmware
nexus-3232c--firmware
nexus-3232c-firmware
nexus-3264c-e-firmware
nexus-3264q-firmware
nexus-3400-firmware
nexus-3408-s-firmware
nexus-34180yc-firmware
nexus-34200yc-sm-firmware
nexus-3432d-s-firmware
nexus-3464c-firmware
nexus-3524-firmware
nexus-3524-x-firmware
nexus-3524-x\/xl-firmware
nexus-3524-xl-firmware
nexus-3548-firmware
nexus-3548-x-firmware
nexus-3548-x\/xl-firmware
nexus-3548-xl-firmware
nexus-36180yc-r-firmware
nexus-3636c-r-firmware
nexus-5548p-firmware
nexus-5548up-firmware
nexus-5596t-firmware
nexus-5596up-firmware
nexus-5600-firmware
nexus-56128p-firmware
nexus-5624q-firmware
nexus-5648q-firmware
nexus-5672up-16g-firmware
nexus-5672up-firmware
nexus-5696q-firmware
nexus-6000-firmware
nexus-6001-firmware
nexus-6001p-firmware
nexus-6001t-firmware
nexus-6004-firmware
nexus-6004x-firmware
nexus-7000-firmware
nexus-7000-supervisor-1-firmware
nexus-7000-supervisor-2-firmware
nexus-7000-supervisor-2e-firmware
nexus-7004-firmware
nexus-7009-firmware
nexus-7010-firmware
nexus-7018-firmware
nexus-7700-firmware
nexus-7700-supervisor-2e-firmware
nexus-7700-supervisor-3e-firmware
nexus-7702-firmware
nexus-7706-firmware
nexus-7710-firmware
nexus-7718-firmware
nexus-9000-firmware
nexus-9000v-firmware
nexus-9200-firmware
nexus-92160yc-x-firmware
nexus-9221c-firmware
nexus-92300yc-firmware
nexus-92304qc-firmware
nexus-92348gc-x-firmware
nexus-9236c-firmware
nexus-9272q-firmware
nexus-9300-firmware
nexus-93108tc-ex-24-firmware
nexus-93108tc-ex-firmware
nexus-93108tc-fx-24-firmware
nexus-93108tc-fx-firmware
nexus-93108tc-fx3p-firmware
nexus-93120tx-firmware
nexus-93128-firmware
nexus-93128tx-firmware
nexus-9316d-gx-firmware
nexus-93180lc-ex-firmware
nexus-93180tc-ex-firmware
nexus-93180yc-ex-24-firmware
nexus-93180yc-ex-firmware
nexus-93180yc-fx-24-firmware
nexus-93180yc-fx-firmware
nexus-93180yc-fx3-firmware
nexus-93180yc-fx3s-firmware
nexus-93216tc-fx2-firmware
nexus-93240yc-fx2-firmware
nexus-9332c-firmware
nexus-9332pq-firmware
nexus-93360yc-fx2-firmware
nexus-9336c-fx2-e-firmware
nexus-9336c-fx2-firmware
nexus-9336pq-firmware
nexus-9348gc-fxp-firmware
nexus-93600cd-gx-firmware
nexus-9364c-firmware
nexus-9364c-gx-firmware
nexus-9372px-e-firmware
nexus-9372px-firmware
nexus-9372tx-e-firmware
nexus-9372tx-firmware
nexus-9396px-firmware
nexus-9396tx-firmware
nexus-9500-supervisor-a-firmware
nexus-9500-supervisor-a\+-firmware
nexus-9500-supervisor-b-firmware
nexus-9500-supervisor-b\+-firmware
nexus-9500r-firmware
nexus-9504-firmware
nexus-9508-firmware
nexus-9516-firmware

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